Tulsa, Oklahoma has placed a bid for the 2024 summer Games. Tulsa is, admittedly, a long shot. They lack the required number of hotel rooms, and the price of the games is, according to the NY Times, "...more than half the state budget." They'd also be the smallest city to host in the modern era. However, what Tulsa says they do have going for them in a major way is space. Frontier as far as the eye can see.
The likelihood of the US even getting a finalist, though, is not good:
Tulsa plans to hold their games just before July, earlier than normal, to avoid both tornado season and their extremely hot summers.It would be a major victory for the USOC to secure even a finalist for the 2024 Games. In part because of a disagreement between the United States and the International Olympic Committe over revenue sharing, American cities have been shut out since Salt Lake City..."